Improvement in base-burning cooking-stoves



uw WILLIAM CLARK.

' Base Burni 1 Coking Stove. lyl.

PaLenLed nec. "26, 1871.

" UNrrEn STATES PATENT OrrrCE.

WILLIAM CLARK, 0F SHELBURNE, VERMONT.

IMPROVEMENT IVN BASE-BURNING COOKING-STOVES.

Speciiication forming part of Letters Patent No. 122,156, dated December26, 1871.

Specification describing a new and Improved Base-Burnin g Cooking-Stove,invented by WIL- LIAM CLARK, of Shelburne, in the county of Chittendenand State of Vermont.

Figure l represents a vertical transverse section of my improvedcooking-stove, the line c c,

Fig. 2, indicating the plane of section. Fig. 2 is a verticallongitudinal section oi' the same on the line k k, Fig. l. Fig. 3 is adetail vertical section through the oven on the line c k, Fig. 2. Fig. 4is a plan or top view of the stove, the oven andV reservoir beingremoved and the top plate partly broken away. Fig. 5 is a top view ofthe stove with the uncovered oven and reservoir in place. Fig. 6 is adetail horizontal section on the line q q, Fig. 2, of the tire-place.Fig. 7 is a detail front view of the door to the air-chamber under .the

v grate. Fig. 8 is a horizontal section of the same on the line kg, Fig.7. Fig. 9 is a transverse section of the same on the line c q, Fig. 7.Similar letters of reference indicate corresponding parts.

This invention relates to a new cooking-stove, which is provided with acircular fire-place and rotary interior lining thereto, and witha feed`a removable cross-partition to have but halt` a supply of coal, whichcan be brought under either portion of the top plate or under the oven,as may be desired. The invention also consists in a new arrangement ofdraught'- door, grate, oven, and water-reservoir, all as hereinaftermore fully described. A

A, in the drawing, represents the hearth-plate of the stove. Bis theouter case oi' the {ire-place,

made circular and enlarged at its upper part, as shown. C is thetop-plate of the stove, placed upon the case or main body B, andprovided with a suitable number of holesfor the reception of thecooking-vessels. D is an oven, placed back of the-iire-place, againstthe body' or case B, to receive the surplus heat radiated from the backof the same. The top plate C extends over the oven D, as shown in Figs.2 and 4. E is the annular inner lining of the lire-place. It is made ofmetal,

of inverted truncated conical form, with a toothed lower edge. A pinion,a, mounted upon a crankarbor, b, which has its bearings'in the side ofthen case B, meshes into the toothed lower edge of this lining E, sothat by turning the arbor b `the lining will also be revolved within thecase B. The upper part of the case B, in which the lining E iscontained, is made to bulge-out, as shown, so that thus an annularspace, d, is formed between B. and E, said space being closed on topvand bottom. The lowerpart4 of the lining E rests on a shoulder, c,which is formed within B, while its upper edge lits a circular groove onthe un- .der side of the top plate C, or is otherwise so made as toclose the space d on top and bottom. F is the grate. It is of circularform, `made of radiating barsV that are connected by a central solidportion and by an outer ring, as in Fig. 4. From this grate projectsdownward a central pin or shaft, f, which has' a bottom arm, g,projecting.

forward toward the door .Gr in the lower part of the case B. The body ofthe grate rests with its .lower rim on a cross, h, which is `placedacross the bottom of the `tire-place, the ends of the cross resting uponnotches cut into the lining E. The pin f iitsloose through the cross h.The door G has an adjustable register, z', forregulating the admissionof air to the fire, substantially like all similar doors in stoves. turethrough the door for the reception of a bar or lever, which, wheninserted within the socket g, can be used to shake the grate byoscillating it `horizontally onits pivot f. The aperture through thedoor G for receiving said bar for shaking must be of a certain length topermit 'the oscillating movements ofthe bar. In order to reduce thesizeof this aperture and not make it too large an opening for air, Ihaveprovided in it a slid-` ing plate j, perforated just enough to admit theshakingar. This plate j rests on a track in the door, and slidesback andforth when the bar is vibrated. H is a transverse partition for theiireplace. It is placed across the lining E, its ends itting grooves ofsaid lining. This partition divides the fire-place into halves, so thatfire may be had only on one side. By'means of the arbor b the lining Ecan be turned to bring the fire under any part of the .top 'plate C,even under the oven I, which is placed upon the top plate G. The smokeescapes from the fire-place through a hole, l, in the lining into thespace d, and thence There is also an aperthrough a hole, fm, in the backpart of the ease B into a chamber, n, which is over the oven D, belowthe top plate G, as Vshown in Fig. 2. The

' smoke then must pass out forward (see Fig. 6)

and sweep entirely around the lining E before it can escape through thehole m,- but the liningE can atany time be turned to make the draughtmore direct. From the outer face of the lining E project ribs o othrough the spa-eed against the case B,.while similar ribs, p p, projectfrom the inner side of B toward E. Whenever the latter isturned the ribswill sweep the walls of the space d of all ashes that may haveaccumulated therein, and cause the same to escape through notches kcutthrough the supporting-flange or shoulder e. L is the ash-pau, ofsuitable kind, introduced through the door G. Behind the oven I isplaced, upon the top plate C, the Water-reservoir J. The products ofcombustion pass 4ordinarily to the chamber u, betweenztwo vertical ribsr r therein, and then up between said ribs through a hole, s, into aflue, t, which is between the oven I and reservoir J. This iiue leads toa smoke-chamber, fu, above the oven, where the current is divided andspread by a transverse rib, y, to finally escape to the smolre-iiue c..

When, however, a damper, w, above the hole s is closed, the smoke passesbackward between the ribs r r and around their back ends, and thenforward again on the outer sides of said ribs, entering the flue tthrough the holes fr fr. way the heat can be carried under the reservoirJ by closing, and away from the same by opening, the damper w. The topplate C is or ymay be perforated under the reservoir J to increase theeffectiveness of the heat. Z is a short pipefor the escape of steam fromthe reservoir. M is a vertical cylinder for the supply of Vcoal tothe Inthis fireplace. It is fittedyupon vand through the top plate C in suchposition `that its charges will, in the ordinary position of E, fallforward of the partition H, the ordinary position being when the hole lis in front. a is a removable plate in the backV of the smoke- `hambern, allowing the san'ie to be properly cleansed out.

,Having thusdescribed my invention, I claim as new and desire to secureby Letters Patentl. Awcookingstove provided with a circular case orbody, B, which contains a circular rotary lining, as set forth. y

2. The rotary lining E, arranged Within the fire-place of a cookingstoveand geared into an arbor, b, whereby it can be turned,.as set forth.

3. The grate F, supported and swiveled in the cross h, which is securedwithin the rotary lining E -of the stove, as specied.

4. The partition H, fitted across the circular fire-place, substantiallyas herein shown and described.

, 5. The combination of the rotary lining having the hole l, with thestationary 'ease B having the hole m, and with the intervening annularsmokepassage d, as set forth. A

6. The ribs o p, arranged respectively on the lining E and case B,substantially as 'and for the purpose herein vshown and described.

7. The smolie-cha1nber n, under the reservoir J, when provided with theribs r r, and arranged in combination with the damper zo and iiue t,substantiallyas herein shown and described.-

The above specification of my invention signed by me this 18th day ofOctober, 1871.

. WILLIAM CLARK.

Witnesses: v

GEO. W. MABEE,

T. B. Mosnnn. (154)

